Skill holder now properly shows the top half of icons in the case where icons are bigger than normal.

Minor QOL changes to build view.
Handle exception caused by browser initialization getting canceled.

Daybreak/Controls/Buttons/HelpButton.xaml

@@ -0,0 +1,19 @@
+<UserControl x:Class="Daybreak.Controls.HelpButton"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:Daybreak.Controls"
+             mc:Ignorable="d"
+             x:Name="_this"
+             d:DesignHeight="450" d:DesignWidth="800">
+    <Viewbox>
+        <Grid>
+            <Ellipse x:Name="BackgroundEllipse" Fill="{Binding ElementName=_this, Path=Foreground, Mode=OneWay}" Visibility="Visible" Opacity="0.1" Width="30" Height="30" />
+            <Ellipse Width="30" Height="30" StrokeThickness="2" Stroke="{Binding ElementName=_this, Path=Foreground, Mode=OneWay}"></Ellipse>
+            <Path Fill="{Binding ElementName=_this, Path=Foreground, Mode=OneWay}" VerticalAlignment="Center" HorizontalAlignment="Center"
+                  Data="m4.99353,17.899l0,-1.47c0,-1.436 0.322,-2.188 1.075,-3.229l2.404,-3.3c1.254,-1.721 1.684,-2.546 1.684,-3.766c0,-2.044 -1.434,-3.335 -3.479,-3.335c-2.008,0 -3.299,1.219 -3.729,3.407c-0.036,0.215 -0.179,0.323 -0.395,0.287l-2.259,-0.395c-0.216,-0.036 -0.323,-0.179 -0.288,-0.395c0.539,-3.443 3.014,-5.703 6.744,-5.703c3.872,0 6.49,2.546 6.49,6.097c0,1.722 -0.608,2.977 -1.828,4.663l-2.403,3.3c-0.717,0.968 -0.933,1.47 -0.933,2.689l0,1.147c0,0.215 -0.143,0.358 -0.358,0.358l-2.367,0c-0.215,0.004 -0.358,-0.14 -0.358,-0.355zm-0.179,3.444c0,-0.215 0.143,-0.358 0.359,-0.358l2.726,0c0.215,0 0.358,0.144 0.358,0.358l0,3.084c0,0.216 -0.144,0.358 -0.358,0.358l-2.726,0c-0.217,0 -0.359,-0.143 -0.359,-0.358l0,-3.084z"></Path>
+            <Ellipse Fill="Transparent" MouseEnter="Ellipse_MouseEnter" MouseLeave="Ellipse_MouseLeave" MouseLeftButtonDown="Ellipse_MouseLeftButtonDown"></Ellipse>
+        </Grid>
+    </Viewbox>
+</UserControl>

Daybreak/Controls/Buttons/HelpButton.xaml.cs

@@ -0,0 +1,37 @@
+using System;
+using System.Windows.Controls;
+using System.Windows.Input;
+
+namespace Daybreak.Controls
+{
+    /// <summary>
+    /// Interaction logic for AddButton.xaml
+    /// </summary>
+    public partial class HelpButton : UserControl
+    {
+        public event EventHandler Clicked;
+
+        public HelpButton()
+        {
+            InitializeComponent();
+        }
+
+        private void Ellipse_MouseEnter(object sender, MouseEventArgs e)
+        {
+            this.BackgroundEllipse.Opacity = 0.6;
+        }
+
+        private void Ellipse_MouseLeave(object sender, MouseEventArgs e)
+        {
+            this.BackgroundEllipse.Opacity = 0;
+        }
+
+        private void Ellipse_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            if (e.ChangedButton == MouseButton.Left)
+            {
+                this.Clicked?.Invoke(this, e);
+            }
+        }
+    }
+}

Daybreak/Controls/Templates/AttributeTemplate.xaml

@@ -4,17 +4,22 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              xmlns:local="clr-namespace:Daybreak.Controls"
-             mc:Ignorable="d" 
+             mc:Ignorable="d"
+             x:Name="_this"
              d:DesignHeight="450" d:DesignWidth="800">
     <Grid>
         <WrapPanel Orientation="Horizontal" HorizontalAlignment="Left" Margin="10, 0, 10, 0">
+            <local:HelpButton Width="20" Height="20" Margin="3, 0, 3, 0" Foreground="White"
+                              Clicked="HelpButton_Clicked" Cursor="Hand"></local:HelpButton>
             <TextBlock Text="{Binding Attribute.Name}" FontSize="16" Foreground="White"></TextBlock>
         </WrapPanel>
         <WrapPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="10, 0, 10, 0">
-            <local:MinusButton Foreground="White" Height="20" Clicked="MinusButton_Clicked"></local:MinusButton>
+            <local:MinusButton Foreground="White" Height="20" Clicked="MinusButton_Clicked" Cursor="Hand"
+                               IsEnabled="{Binding ElementName=_this, Path=CanSubtract, Mode=OneWay}"></local:MinusButton>
             <TextBox Background="Transparent" Foreground="White" FontSize="16" IsReadOnly="True" Width="30"
                      Text="{Binding Points}"></TextBox>
-            <local:AddButton Foreground="White" Height="20" Clicked="AddButton_Clicked"></local:AddButton>
+            <local:AddButton Foreground="White" Height="20" Clicked="AddButton_Clicked" Cursor="Hand"
+                             IsEnabled="{Binding ElementName=_this, Path=CanAdd, Mode=OneWay}"></local:AddButton>
         </WrapPanel>
     </Grid>
 </UserControl>

Daybreak/Controls/Templates/AttributeTemplate.xaml.cs

@@ -1,6 +1,9 @@
 using Daybreak.Models.Builds;
+using System;
 using System.Extensions;
+using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Extensions;
 
 namespace Daybreak.Controls
 {
@@ -9,9 +12,45 @@ namespace Daybreak.Controls
     /// </summary>
     public partial class AttributeTemplate : UserControl
     {
+        public readonly static DependencyProperty CanAddProperty =
+            DependencyPropertyExtensions.Register<AttributeTemplate, bool>(nameof(CanAdd), new PropertyMetadata(false));
+        public readonly static DependencyProperty CanSubtractProperty =
+            DependencyPropertyExtensions.Register<AttributeTemplate, bool>(nameof(CanSubtract), new PropertyMetadata(false));
+
+        public event EventHandler<AttributeEntry> HelpClicked;
+
+        public bool CanAdd
+        {
+            get => this.GetTypedValue<bool>(CanAddProperty);
+            private set => this.SetValue(CanAddProperty, value);
+        }
+
+        public bool CanSubtract
+        {
+            get => this.GetTypedValue<bool>(CanSubtractProperty);
+            private set => this.SetValue(CanSubtractProperty, value);
+        }
+
         public AttributeTemplate()
         {
-            InitializeComponent();
+            this.InitializeComponent();
+            this.DataContextChanged += AttributeTemplate_DataContextChanged;
+        }
+
+        private void AttributeTemplate_DataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            if (e.NewValue is AttributeEntry attributeEntry)
+            {
+                if (attributeEntry.Points > 0)
+                {
+                    this.CanSubtract = true;
+                }
+
+                if (attributeEntry.Points < 12)
+                {
+                    this.CanAdd = true;
+                }
+            }
         }
 
         private void MinusButton_Clicked(object sender, System.EventArgs e)
@@ -19,6 +58,8 @@ namespace Daybreak.Controls
             if (this.DataContext.As<AttributeEntry>().Points > 0)
             {
                 this.DataContext.As<AttributeEntry>().Points--;
+                this.CanSubtract = this.DataContext.As<AttributeEntry>().Points > 0;
+                this.CanAdd = true;
             }
         }
 
@@ -27,6 +68,16 @@ namespace Daybreak.Controls
             if (this.DataContext.As<AttributeEntry>().Points < 12)
             {
                 this.DataContext.As<AttributeEntry>().Points++;
+                this.CanAdd = this.DataContext.As<AttributeEntry>().Points < 12;
+                this.CanSubtract = true;
+            }
+        }
+
+        private void HelpButton_Clicked(object sender, System.EventArgs e)
+        {
+            if (this.DataContext is AttributeEntry attributeEntry)
+            {
+                this.HelpClicked?.Invoke(this, attributeEntry);
             }
         }
     }

Daybreak/Controls/Templates/BuildTemplate.xaml

@@ -26,13 +26,14 @@
             <Grid.ColumnDefinitions>
                 <ColumnDefinition Width="auto"></ColumnDefinition>
                 <ColumnDefinition Width="*"></ColumnDefinition>
+                <ColumnDefinition Width="auto"></ColumnDefinition>
             </Grid.ColumnDefinitions>
             <TextBlock Text="Primary Profession: " FontSize="16" Foreground="White"></TextBlock>
-            <ListView FontSize="16" Foreground="White" Grid.Column="1"
+            <ListView FontSize="16" Foreground="White" Grid.Column="1" BorderThickness="0"
                       Background="Transparent" ItemsSource="{Binding ElementName=_this, Path=Professions, Mode=OneWay}"
-                      SelectedItem="{Binding ElementName=_this, Path=PrimaryProfession, Mode=TwoWay}" Height="25"
+                      SelectedItem="{Binding ElementName=_this, Path=PrimaryProfession, Mode=TwoWay}" Height="30"
                       SelectionMode="Single" ScrollViewer.VerticalScrollBarVisibility="Disabled"
-                      PreviewMouseWheel="ListView_DisableMouseWheel">
+                      PreviewMouseWheel="ListView_NavigateWithMouseWheel">
                 <ListView.ItemTemplate>
                     <DataTemplate>
                         <TextBlock Text="{Binding Name, Mode=OneWay}"></TextBlock>
@@ -42,18 +43,21 @@
                     <behaviors:ScrollIntoView></behaviors:ScrollIntoView>
                 </interactivity:Interaction.Behaviors>
             </ListView>
+            <local:HelpButton Grid.Column="2" Foreground="White" Width="20" Height="20" Margin="3"
+                              Clicked="HelpButtonPrimary_Clicked" Cursor="Hand"></local:HelpButton>
         </Grid>
         <Grid Grid.Row="2">
             <Grid.ColumnDefinitions>
                 <ColumnDefinition Width="auto"></ColumnDefinition>
                 <ColumnDefinition Width="*"></ColumnDefinition>
+                <ColumnDefinition Width="auto"></ColumnDefinition>
             </Grid.ColumnDefinitions>
             <TextBlock Text="Secondary Profession: " FontSize="16" Foreground="White"></TextBlock>
-            <ListView FontSize="16" Foreground="White" Grid.Column="1"
+            <ListView FontSize="16" Foreground="White" Grid.Column="1" BorderThickness="0"
                       Background="Transparent" ItemsSource="{Binding ElementName=_this, Path=Professions, Mode=OneWay}"
-                      SelectedItem="{Binding ElementName=_this, Path=SecondaryProfession, Mode=TwoWay}" Height="25"
+                      SelectedItem="{Binding ElementName=_this, Path=SecondaryProfession, Mode=TwoWay}" Height="30"
                       SelectionMode="Single" ScrollViewer.VerticalScrollBarVisibility="Disabled"
-                      PreviewMouseWheel="ListView_DisableMouseWheel">
+                      PreviewMouseWheel="ListView_NavigateWithMouseWheel">
                 <ListView.ItemTemplate>
                     <DataTemplate>
                         <TextBlock Text="{Binding Name, Mode=OneWay}"></TextBlock>
@@ -63,13 +67,15 @@
                     <behaviors:ScrollIntoView></behaviors:ScrollIntoView>
                 </interactivity:Interaction.Behaviors>
             </ListView>
+            <local:HelpButton Grid.Column="2" Foreground="White" Width="20" Height="20" Margin="3"
+                              Clicked="HelpButtonSecondary_Clicked" Cursor="Hand"></local:HelpButton>
         </Grid>
         <Grid Grid.Row="3">
             <ListBox Background="Transparent" ItemsSource="{Binding ElementName=_this, Path=Attributes, Mode=OneWay}"
-                     HorizontalContentAlignment="Stretch">
+                     HorizontalContentAlignment="Stretch" BorderThickness="0">
                 <ListBox.ItemTemplate>
                     <DataTemplate>
-                        <local:AttributeTemplate></local:AttributeTemplate>
+                        <local:AttributeTemplate HelpClicked="AttributeTemplate_HelpClicked"></local:AttributeTemplate>
                     </DataTemplate>
                 </ListBox.ItemTemplate>
             </ListBox>
@@ -90,42 +96,42 @@
                 <RowDefinition Height="auto"></RowDefinition>
             </Grid.RowDefinitions>
             <local:SkillTemplate Grid.Column="0"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill0, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>
             <local:SkillTemplate Grid.Column="1"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill1, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>
             <local:SkillTemplate Grid.Column="2"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill2, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>
             <local:SkillTemplate Grid.Column="3"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill3, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>
             <local:SkillTemplate Grid.Column="4"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill4, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>
             <local:SkillTemplate Grid.Column="5"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill5, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>
             <local:SkillTemplate Grid.Column="6"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill6, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>
             <local:SkillTemplate Grid.Column="7"
-                                 Foreground="White"
+                                 Foreground="White" Cursor="Hand"
                                  FontSize="22" DataContext="{Binding ElementName=_this, Path=Skill7, Mode=TwoWay}"
                                  VerticalAlignment="Stretch" Clicked="SkillTemplate_Clicked"
                                  RemoveClicked="SkillTemplate_RemoveClicked"></local:SkillTemplate>

Daybreak/Controls/Templates/BuildTemplate.xaml.cs

@@ -1,6 +1,7 @@
 using Daybreak.Launch;
 using Daybreak.Models.Builds;
 using Daybreak.Services.IconRetrieve;
+using System.Collections;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Extensions;
@@ -20,8 +21,8 @@ namespace Daybreak.Controls
     /// </summary>
     public partial class BuildTemplate : UserControl
     {
-        private const string SkillNamePlaceholder = "[NAME]";
-        private const string BaseAddress = $"https://wiki.guildwars.com/wiki/{SkillNamePlaceholder}";
+        private const string InfoNamePlaceholder = "[NAME]";
+        private const string BaseAddress = $"https://wiki.guildwars.com/wiki/{InfoNamePlaceholder}";
 
         public readonly static DependencyProperty PrimaryProfessionProperty =
             DependencyPropertyExtensions.Register<BuildTemplate, Profession>(nameof(PrimaryProfession), new PropertyMetadata(Profession.None));
@@ -137,8 +138,8 @@ namespace Daybreak.Controls
 
         private void Grid_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
         {
-            this.SkillBrowser.Width = 0;
-            this.SkillsListView.Width = 0;
+            this.HideSkillListView();
+            this.HideInfoBrowser();
         }
 
         private void LoadAttributes()
@@ -244,21 +245,79 @@ namespace Daybreak.Controls
             this.Skill7 = build.Build.Skills[7];
         }
 
+        private void BrowseToInfo(string infoName)
+        {
+            var address = BaseAddress.Replace(InfoNamePlaceholder, infoName.Replace(" ", "_"));
+            this.SkillBrowser.Address = address;
+            this.ShowInfoBrowser();
+        }
+
+        private void ShowInfoBrowser()
+        {
+            this.SkillBrowser.Width = 400;
+            this.SkillsListView.Width = 0;
+        }
+
+        private void HideInfoBrowser()
+        {
+            this.SkillBrowser.Width = 0;
+        }
+
+        private void ShowSkillListView()
+        {
+            this.SkillBrowser.Width = 0;
+            this.SkillsListView.Width = 400;
+        }
+
+        private void HideSkillListView()
+        {
+            this.SkillsListView.Width = 0;
+        }
+
+        private void HelpButtonPrimary_Clicked(object sender, System.EventArgs e)
+        {
+            if (this.PrimaryProfession == Profession.None)
+            {
+                return;
+            }
+
+            this.BrowseToInfo(PrimaryProfession.Name);
+            if (e is RoutedEventArgs routedEventArgs)
+            {
+                routedEventArgs.Handled = true;
+            }
+        }
+
+        private void HelpButtonSecondary_Clicked(object sender, System.EventArgs e)
+        {
+            if (this.SecondaryProfession == Profession.None)
+            {
+                return;
+            }
+
+            this.BrowseToInfo(this.SecondaryProfession.Name);
+            if (e is RoutedEventArgs routedEventArgs)
+            {
+                routedEventArgs.Handled = true;
+            }
+        }
+
+        private void AttributeTemplate_HelpClicked(object sender, AttributeEntry e)
+        {
+            this.BrowseToInfo(e.Attribute.Name);
+        }
+
         private void SkillTemplate_Clicked(object sender, RoutedEventArgs e)
         {
             var skill = sender.As<SkillTemplate>().DataContext.As<Skill>();
             if (skill == Skill.NoSkill)
             {
-                this.SkillsListView.Width = 400;
-                this.SkillBrowser.Width = 0;
+                this.ShowSkillListView();
                 this.selectingSkillTemplate = sender.As<SkillTemplate>();
             }
             else
             {
-                var address = BaseAddress.Replace(SkillNamePlaceholder, skill.Name.Replace(" ", "_"));
-                this.SkillBrowser.Address = address;
-                this.SkillBrowser.Width = 400;
-                this.SkillsListView.Width = 0;
+                this.BrowseToInfo(skill.Name);
             }
             e.Handled = true;
         }
@@ -272,12 +331,12 @@ namespace Daybreak.Controls
         {
             if (this.selectingSkillTemplate is null)
             {
-                this.SkillsListView.Width = 0;
+                this.HideSkillListView();
                 return;
             }
 
             this.selectingSkillTemplate.DataContext = sender.As<ListView>().SelectedItem;
-            this.SkillsListView.Width = 0;
+            this.HideSkillListView();
             this.loadedBuild.Build.Skills[0] = Skill0;
             this.loadedBuild.Build.Skills[1] = Skill1;
             this.loadedBuild.Build.Skills[2] = Skill2;
@@ -288,9 +347,21 @@ namespace Daybreak.Controls
             this.loadedBuild.Build.Skills[7] = Skill7;
         }
 
-        private void ListView_DisableMouseWheel(object sender, System.Windows.Input.MouseWheelEventArgs e)
+        private void ListView_NavigateWithMouseWheel(object sender, System.Windows.Input.MouseWheelEventArgs e)
         {
             e.Handled = true;
+            if (e.Delta > 0)
+            {
+                sender.As<ListView>().SelectedIndex = sender.As<ListView>().SelectedIndex > 0 ?
+                    sender.As<ListView>().SelectedIndex - 1 :
+                    0;
+            }
+            else
+            {
+                sender.As<ListView>().SelectedIndex = sender.As<ListView>().SelectedIndex < sender.As<ListView>().Items.Count - 1 ?
+                    sender.As<ListView>().SelectedIndex + 1 :
+                    sender.As<ListView>().Items.Count;
+            }
         }
     }
 }

Daybreak/Controls/Templates/SkillTemplate.xaml

@@ -17,8 +17,11 @@
             <RowDefinition Height="*"></RowDefinition>
             <RowDefinition Height="auto"></RowDefinition>
         </Grid.RowDefinitions>
-        <Image VerticalAlignment="Stretch" HorizontalAlignment="Stretch"
-               Source="{Binding ElementName=_this, Path=ImageSource, Mode=OneWay}"></Image>
+        <Image VerticalAlignment="Top" HorizontalAlignment="Left"
+               Width="{Binding ElementName=_this, Path=ActualWidth, Mode=OneWay}"
+               Height="{Binding ElementName=_this, Path=ActualWidth, Mode=OneWay}"
+               Source="{Binding ElementName=_this, Path=ImageSource, Mode=OneWay}"
+               Stretch="UniformToFill"></Image>
         <Border BorderThickness="5" BorderBrush="Black"></Border>
         <Border BorderThickness="5" BorderBrush="{Binding ElementName=_this, Path=Foreground, Mode=OneWay}"
                 Opacity="{Binding ElementName=_this, Path=BorderOpacity, Mode=OneWay}"></Border>

Daybreak/Daybreak.csproj

@@ -9,12 +9,12 @@
     <CopyLocalLockFileAssemblies>false</CopyLocalLockFileAssemblies>
     <LangVersion>preview</LangVersion>
     <ApplicationIcon>Daybreak.ico</ApplicationIcon>
-    <Version>0.7.2</Version>
+    <Version>0.7.5</Version>
     <ApplicationManifest>app.manifest</ApplicationManifest>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="HtmlAgilityPack" Version="1.11.33" />
+    <PackageReference Include="HtmlAgilityPack" Version="1.11.32" />
     <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.818.41" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="Slim" Version="1.2.1" />
@@ -25,6 +25,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Compile Update="Controls\Buttons\HelpButton.xaml.cs">
+      <SubType>Code</SubType>
+    </Compile>
     <Compile Update="Controls\Buttons\MinusButton.xaml.cs">
       <SubType>Code</SubType>
     </Compile>
@@ -37,6 +40,10 @@
   </ItemGroup>
 
   <ItemGroup>
+    <Page Update="Controls\Buttons\HelpButton.xaml">
+      <XamlRuntime>$(DefaultXamlRuntime)</XamlRuntime>
+      <SubType>Designer</SubType>
+    </Page>
     <Page Update="Controls\Buttons\MinusButton.xaml">
       <XamlRuntime>$(DefaultXamlRuntime)</XamlRuntime>
       <SubType>Designer</SubType>

Daybreak/Launch/Launcher.cs

@@ -9,6 +9,8 @@ using Microsoft.Web.WebView2.Wpf;
 using Slim;
 using System;
 using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Extensions;
@@ -45,6 +47,18 @@ namespace Daybreak.Launch
                 MessageBox.Show(fatalException.ToString());
                 return false;
             }
+            else if (e is AggregateException aggregateException)
+            {
+                if (aggregateException.InnerExceptions.FirstOrDefault() is COMException comException &&
+                    comException.Message.Contains("Invalid window handle"))
+                {
+                    /* 
+                     * Ignore exception caused by browser failing to initialize due to missing window.
+                     * Likely caused by switching windows before browser was initialized.
+                     */
+                    return true;
+                }
+            }
 
             MessageBox.Show(e.ToString());
             return true;